Optical spectrum modulated position sensor having a controller with at least one fiber optic line
US8461514B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Feb 3, 2011 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Nov 27, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/268
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A high resolution fiber optic position sensor system including a remote sensor head connected by a pair of optical fibers to an electronic controller unit. The sensor is an electronically passive device that utilizes optical signals only that senses the angular absolute position over the full 360° rotation with a sensing resolution of 13 bit (8196). The sensor modulates the optical signal based on the exact position of the sensor disk. This modulated optical signal is analyzed in the controller and translated into the position signal. Because the sensor head is electrically passive it can be deployed in an EMI/RFI intense environment. Further, it is immune to lightening strikes and can also be located many hundred meters away from the control unit without creating undesirable ground loops.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.